Address
Jewel Cave National Monument
11149 US-16 B-12
Custer, SD 57730
60 min
Operating hours
Detailed Tour Costs Below
Jewel Cave National Monument is the third longest cave in the world with over 200 miles explored. The mileage continues to grow as researchers discover an average of three miles of new passageways each year luring explorers to its maze of endless tunnels.